CN218509860U

CN218509860U - Parallel electro-hydraulic push rod

Info

Publication number: CN218509860U
Application number: CN202222055648.1U
Authority: CN
Inventors: 孙青�; 刘莉华; 张世平
Original assignee: Yangzhou Zhuorei Hydraulic Equipment Technology Co ltd
Current assignee: Yangzhou Zhuorei Hydraulic Equipment Technology Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-02-21
Anticipated expiration: 2032-08-05

Abstract

The utility model provides a parallel type electro-hydraulic push rod, including motor, shaft coupling, cylinder and oil tank, the cylinder is inside to be equipped with the piston rod, the left side of piston rod is equipped with the earrings, the right side piston of piston rod, the earrings center is equipped with the bearing, the bottom of cylinder is equipped with the rear end cap, the electro-hydraulic push rod is the inline type, the motor sets up on the lateral wall of oil tank, and the motor connects the shaft coupling, the upper and lower end of shaft coupling is provided with the pump seat, be equipped with two-way gear pump and valve block in the oil tank, the shaft coupling connects two-way gear pump, shaft coupling, pump seat all set up in the oil tank; an air filter is arranged on the side wall of the oil tank and the lower end of the motor, the other side wall of the oil tank is connected with the rear end cover, and a guide sleeve is arranged between the cylinder barrel and the piston rod; a buffer device is arranged between the piston and the rear end cover, and the buffer device is arranged inside the cylinder barrel, so that the piston rod and the cylinder body are prevented from being damaged due to excessive internal pressure, and the service life of the device is prolonged.

Description

Parallel electro-hydraulic push rod

Technical Field

The utility model relates to a hydraulic pressure equips technical field, especially relates to a run-in electricity liquid push rod.

Background

The electro-hydraulic push rod is a hydraulic drive manipulator integrating mechanical, electrical and hydraulic functions, is suitable for the reciprocating linear motion (or reciprocating at a certain angle) and can also be used in places needing to ascend, descend or clamp workpieces, can realize the centralized or automatic control of remote dangerous areas, is used for program control together with a computer, and is widely applied to industries such as metallurgy, mines, coal, grain, electric power and the like.

However, in the prior art, the electro-hydraulic push rod is lack of a buffer device, and when the electro-hydraulic push rod is used, the buffer device is lacked, so that the piston rod inside is easily damaged, even the damage inside the cylinder body is caused, and the damage cannot be repaired.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a parallel electro-hydraulic push rod.

The utility model discloses a following technical scheme realizes:

a parallel type electro-hydraulic push rod comprises a motor, a coupler, a cylinder barrel and an oil tank, wherein a piston rod is arranged inside the cylinder barrel, an ear ring is arranged on the left side of the piston rod, a piston on the right side of the piston rod is provided with a bearing, a rear end cover is arranged at the bottom of the cylinder barrel, the electro-hydraulic push rod is in an in-line type, the motor is arranged on the side wall of the oil tank and is connected with the coupler, a pump seat is arranged at the upper end and the lower end of the coupler, a bidirectional gear pump and a valve block are arranged in the oil tank, the coupler is connected with the bidirectional gear pump, and the coupler and the pump seat are both arranged in the oil tank;

an air filter is arranged on the side wall of the oil tank and the lower end of the motor, the other side wall of the oil tank is connected with the rear end cover, and a guide sleeve is arranged between the cylinder barrel and the piston rod;

and a buffer device is arranged between the piston and the rear end cover.

Buffer includes the buffer block, the buffer block is equipped with two and fixes on the right side wall of piston, the buffer block symmetry sets up, the position that the rear end housing left side wall corresponds is equipped with the cushion chamber, be equipped with the buffer board in the cushion chamber, be equipped with a plurality of springs between buffer board and the rear end housing, spring one end is fixed on the left side wall of rear end housing, and the other end is fixed on the right side wall of buffer board.

The bidirectional gear pump is respectively connected with the oil suction filter and the valve block through oil passages, the valve block is provided with a hydraulic control one-way valve, the lower portion of the valve block is connected with the one-way valve, the upper portion of the valve block is connected with a throttling valve and an overflow valve, and the throttling valve is arranged right above the hydraulic control one-way valve.

The guide sleeve is equipped with dust ring, circle, ste seal and support ring for the axle in proper order with the piston rod junction to the rear end cap direction, be equipped with O type circle on the periphery wall of guide sleeve.

The piston rod and the cylinder barrel are sleeved with dustproof sleeves, and the dustproof sleeves can be lifted and retracted.

The utility model discloses for prior art through at the inside buffer that sets up of cylinder, when the cylinder received ambient pressure too big, the piston rod sharply contracts, and the buffer block of piston bottom contacts with the buffer board on the rear end cap, and the spring in the buffer chamber is compressed, can cushion, prevents that internal pressure from too big causing harm, extension device life with piston rod and cylinder body.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of the guide sleeve of the present invention;

in the figure: 1. an ear ring; 11. a bearing; 2. a cylinder barrel; 21. a rear end cap; 22. a piston rod; 23. an oil pipe; 3. an oil tank; 31. an air cleaner; 32. a straight pipe joint; 33. a hydraulic control check valve; 34. a throttle valve; 35. an overflow valve; 36. a bidirectional gear pump; 37. a coupling; 38. an oil suction filter; 39. a hose; 4. An electric motor; 5. a dust-proof sleeve; 6. a guide sleeve; 61. mounting holes; 62. a dust ring; 63. a ring for a shaft; 64. An O-shaped ring; 65. performing Steady seal; 66. a support ring; 7. a piston; 71. a seal ring; 72. a buffer block; 73. A buffer plate; 74. a spring; 75. a buffer chamber; 8. a valve block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The present invention will be further explained with reference to the accompanying drawings,

as shown in fig. 1-4, a parallel type electro-hydraulic push rod comprises a motor 4, a coupler 37, a cylinder barrel 2 and an oil tank 3, wherein a piston rod 22 is arranged inside the cylinder barrel 2, an earring 1 is arranged on the left side of the piston rod 22, a piston 7 on the right side of the piston rod 22 is provided, a bearing 11 is arranged at the center of the earring 1, a rear end cover 21 is arranged at the bottom of the cylinder barrel 2, the electro-hydraulic push rod is in an in-line type, the motor 4 is arranged on the side wall of the oil tank 3, the motor 4 is connected with the coupler 37, a pump seat is arranged at the upper end and the lower end of the coupler 37, a bidirectional gear pump 36 and a valve block 8 are arranged in the oil tank 3, the coupler 37 is connected with the bidirectional gear pump 36, and the coupler 37 and the pump seat are both arranged in the oil tank 3;

an air filter 31 is arranged on the side wall of the oil tank 3 and the lower end of the motor 4, the other side wall of the oil tank 3 is connected with the rear end cover 21, and a guide sleeve 6 is arranged between the cylinder barrel 2 and the piston rod 22;

and a buffer device is arranged between the piston 7 and the rear end cover 21.

Buffer includes buffer block 72, buffer block 72 is equipped with two and fixes on the right side wall of piston 7, buffer block 72 symmetry sets up, the position that the rear end housing 21 left side wall corresponds is equipped with cushion chamber 75, be equipped with buffer board 73 in the cushion chamber 75, be equipped with a plurality of springs 74 between buffer board 73 and the rear end housing 21, spring 74 one end is fixed on the left side wall of rear end housing 21, and the other end is fixed on the right side wall of buffer board 73.

Oil filter 38 and valve piece 8 are inhaled through the oil circuit connection respectively to bidirectional gear pump 36, be provided with hydraulic control check valve 33 on the valve piece 8, valve piece 8 sub-unit connection has the check valve, and valve piece 8 upper portion is connected with choke valve 34 and overflow valve 35, choke valve 34 sets up directly over hydraulic control check valve 33, and bidirectional gear pump 36 inhales the hydraulic oil in the oil tank 3 through inhaling oil filter 38, for preventing the hydraulic oil backward flow, sets up the check valve between oil filter 38 and bidirectional gear pump 36, and hydraulic oil gets into bidirectional gear pump 36, carries on the oil inlet of valve piece 8 through bidirectional gear pump 36, and when the oil pressure in the oil circuit exceeded the maximum limit value of settlement, overflow valve 35 overflow in time.

The connecting part of the guide sleeve 6 and the piston rod 22 is sequentially provided with a dustproof ring 62, a ring 63 for a shaft, a Stent seal 65 and a support ring 66 towards the rear end cover 21, the peripheral wall of the guide sleeve 6 is provided with an O-shaped ring, and the dustproof ring 62 and the support ring 66 ensure the overall sealing property and have good support property.

The piston rod 22 and the cylinder barrel 2 are sleeved with the dustproof sleeve 5, the dustproof sleeve 5 can be lifted and retracted, the dustproof cover can stretch and retract, the part, exceeding the cylinder barrel 2, of the piston rod 22 is protected by the dustproof cover, the dustproof cover can stretch and retract along with the piston rod 22, and the interior of the device is effectively prevented from being polluted by dust.

The utility model discloses a theory of use is: when the hydraulic cylinder is used, when the electro-hydraulic push rod is under external pressure, the piston rod 22 drives the piston 7 to contract, when the piston 7 contacts the bottom of the cylinder barrel 2, the piston 7 abuts against the rear end cover 21, the buffer block 72 on the right side of the piston 7 contacts with the buffer plate 73, the spring 74 on the right side of the buffer plate 73 is compressed, the buffer plate 73 is pressed into the buffer cavity 75 to absorb part of pressure, impact between the piston 7 and the cylinder barrel 2 due to overlarge internal pressure is relieved, and the piston rod 22 and the cylinder barrel 2 are prevented from being damaged.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a run-in electricity liquid push rod, includes motor (4), shaft coupling (37), cylinder (2) and oil tank (3), cylinder (2) inside is equipped with piston rod (22), the left side of piston rod (22) is equipped with earrings (1), right side piston (7) of piston rod (22), earrings (1) center is equipped with bearing (11), the bottom of cylinder (2) is equipped with rear end cap (21), its characterized in that: the electro-hydraulic push rod is in an in-line mode, the motor (4) is arranged on the side wall of the oil tank (3), the motor (4) is connected with a coupler (37), pump seats are arranged at the upper end and the lower end of the coupler (37), a bidirectional gear pump (36) and a valve block (8) are arranged in the oil tank (3), the coupler (37) is connected with the bidirectional gear pump (36), and the coupler (37) and the pump seats are both arranged in the oil tank (3);

an air filter (31) is arranged on the side wall of the oil tank (3) and the lower end of the motor (4), the other side wall of the oil tank (3) is connected with the rear end cover (21), and a guide sleeve (6) is arranged between the cylinder barrel (2) and the piston rod (22);

and a buffer device is arranged between the piston (7) and the rear end cover (21).

2. The parallel electro-hydraulic push rod of claim 1, wherein: buffer includes buffer block (72), buffer block (72) are equipped with two and fix on the right side wall of piston (7), buffer block (72) symmetry sets up, the position that rear end housing (21) left side wall corresponds is equipped with cushion chamber (75), be equipped with buffer board (73) in cushion chamber (75), be equipped with a plurality of springs (74) between buffer board (73) and rear end housing (21), spring (74) one end is fixed on the left side wall of rear end housing (21), and the other end is fixed on the right side wall of buffer board (73).

3. The parallel electro-hydraulic push rod of claim 2, wherein: the bidirectional gear pump (36) is connected with the oil suction filter (38) and the valve block (8) through oil passages respectively, a hydraulic control one-way valve (33) is arranged on the valve block (8), the lower portion of the valve block (8) is connected with the one-way valve, the upper portion of the valve block (8) is connected with a throttle valve (34) and an overflow valve (35), and the throttle valve (34) is arranged right above the hydraulic control one-way valve (33).

4. The parallel electro-hydraulic push rod of claim 2, wherein: the guide sleeve is characterized in that a dust ring (62), a shaft ring (63), a Stent seal (65) and a support ring (66) are sequentially arranged at the joint of the guide sleeve (6) and the piston rod (22) towards the rear end cover (21), and an O-shaped ring is arranged on the peripheral wall of the guide sleeve (6).

5. The parallel electro-hydraulic push rod of claim 2, wherein: the piston rod (22) and the cylinder barrel (2) are sleeved with a dustproof sleeve (5), and the dustproof sleeve (5) can be lifted and retracted.